DVTS Overview Ben Fineman Internet2

Using a consumer DV Cam for high quality video on the Internet you can send & receive High Quality A/V that doesn’t require funny, expensive machines (MPEG2) that doesn’t involve intellectual property issues (royalties) that doesn’t require unusual, expensive cameras (HDTV) that does require a network capable of doing 30 mbps all you need is a capable Network and … a DV capable camera (HandyCam, DVCAM, DVCPro) with IEEE1394 (firewire) capability DV receiver (deck, camera, TV) that is firewire capable Or an analog/digital converter(s) if using a non-firewire capable camera/receiver (Canopus ADVC 100) a computer with IEEE1394 (firewire) capability 2 8/21/2015

What is IEEE 1394 (firewire) and why should I care? Connects the camera to the computer Provides high quality digital path “Firewire” developed by Apple Computer It is really a high-speed serial data bus IEEE 1394 is the published specification for high-speed serial bus Firewire Mbit/s over a distance of 4.5M Double twisted pair, 28 AWG wire Longer distance possible using higher gauges and slower data rates Firewire Mbit/s over a distance of 100M 3 8/21/2015

What is DV (Digital Video)? Digital Video, put simply, is video that has been digitally sampled Digital Video comes in many formats and data rates. Examples: CCIR :2:2 (ITU-R BT.601) Digital mbps MPEG2 up to 100Mbps High Definition – SMPTE 292M, ATSC rates, and Mbps Streaming Video: Real, WM, Quicktime/Darwin/Sorensen, etc. 4 8/21/2015

The Digital Camcorder uses DV25 DV25 is a common form of digital video reduction and compression employed in consumer digital camcorders DV25 applies a 5:1 compression and a 4:1:1 color space; achieves a fixed data rate of 25 mbps Audio is typically two-channel PCM encoded at 12 or 16 bits, sampled at 48kHz, similar to CD or DAT DV25 achieves relatively high audio and picture quality with very low encoding latency. End-to-end quality is fully preserved: No additional compression/decompression is added 5 8/21/2015

Where does DV25 “fit” using bandwidth when you put it on the Internet? Real/Quicktime/WM/Flash: 50 kBit/s-1Mbit/s per stream MPEG1: Mbit/s per stream MPEG2: Mbit/s per stream DV25 (DVTS): 30 Mbit/s per stream 25 Mbit/s for video, 5MBit/s for audio and overhead Compressed HDTV: 20 Mbit/s – 1 Gbit/s per stream Uncompressed HDTV: 1.5 Gbit/s per stream 6 8/21/2015

Graphical Bandwidth Comparison 7 8/21/2015

DVTS unicast point to point: 8 8/21/2015

DVTS unicast point to point: 9 8/21/2015

DVTS Multicast Example: 10 8/21/2015

Things you can do with DVTS 2009 Spring Member Meeting View High Quality Netcasts Video “Conference” Both P2P and multipoint (using multicast) Master Class – music instruction Access Grid integration (APAN work) Internet2 “DV Guide” Remote Production Recording 11 8/21/2015

What is the “DVGuide”? Imagine that … you could tune your computer into a series of “educational” channels the same way you tune your television into satellite channels you could send & receive DV quality video across the internet with the same ease as sending & receiving you could expand the borders of the campus, reaching alumni, colleagues, students, and potential students through an institutional television channel you could do all this without any significant capital expenditure by taking advantage of resources that currently exist on your campus 12 8/21/2015

Introducing the “DVGuide”! 13 8/21/2015

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brought to you by … Internet2/ResearchChannel/Bigvideo Working Group The Internet2/ResearchChannel Working Group provides a testbed for the exploration of high-quality demand and streaming video applications across Internet2 backbones and associated campus networks. Bigvideo has been a subcommittee of the Internet2- ResearchChannel Working Group interested in using affordable and widely available cameras, PC’s, software, and hardware began testing DV as an option between typical streaming products and the atypical High Definition Television capabilities. USF CVPA (courtesy of Michael Koberstein) 15 8/21/2015

A word about Echo cancellation When do you need it? Interactive (two way) sessions How can I avoid it? Headset, position of microphones & speakers Brian’s audio talk – dynamic, ribbon, condenser mics Should I avoid it? Brian Shepard might argue for thinking about this carefully with regard to latency/complexity Echo rejection versus echo cancellation Electronic devices: Voice versus music 16 8/21/2015

A quick word about lighting/audio Match investment to the event Personal video conference Master’s class Demo for “funding sources” Nationally “broadcast” stream Etc. Do not underestimate need for good lighting 17 8/21/2015

How do I get started? DVTS – software Software encapsulation using the PC processor, NIC, etc. Requires a firewire card to “send” (and for “firewire” receive) Runs on number of platforms, though Windows has the best GUI (OS X, Linux KNOPPIX dvts_pl from IU) Windows, and Linux can use PC monitor for display 18 8/21/2015

DVTS Software Platforms 19 8/21/2015 HardwareOperating System IEEE 1394/FirewireMultiple firewire port support Macintosh Power PCOSXPort built-inno Macintosh IntelOSXPort built-inno Pentium III or greaterWindows XPPC firewire card or built inyes Pentium III or greaterLinuxPC firewire card or built inno

DVTS Software versions 20 8/21/2015 Operating System Command line applicationsGUI application dvsenddvrecvdvsavedvplay App Name Firewire Send Firewire Receive Render to screen Mac OSXyes dvts.app*yes no Windows XP/Vista no dvts.exeyes LINUXyes ---- * This application is alpha release level

Further information Resources WIDE Project - Internet2 Contacts Ann Doyle - Ben Fineman – Merit Contacts Laurie Kirchmeier - New World Symphony Contacts Justin Trieger – 21 8/21/2015

Questions? ? 22 8/21/2015